<template>
	<div>
		<div class="search">
			<input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音" />
		</div>
		<div class="search-content" ref="search" v-show="keyword">
			<ul>
				<li class="search-item border-bottom" v-for="item of list"
				:key="item.id"
				@click="handleCityClick(item.name)">
					{{item.name}}
				</li>
				<li class="search-item border-bottom" v-show="hasNoData">
					没有找到匹配数据
				</li>
			</ul>
		</div>
	</div>
</template>

<script>
import Bscoll from 'better-scroll'
export default {
	name: 'CitySearch',
	props: {
		cities: Object
	},
	data () {
		return {
			keyword: '',
			list: [],
			timer: null
		}
	},
	computed: {
		hasNoData () {
			return !this.list.length
		}
	},
	watch: {
		keyword () {
			if (this.timer) {
				clearTimeout(this.timer)
			}
			if (!this.keyword) {
				this.list = []
				return
			}
			this.timer = setTimeout(() => {
				const result = []
				for (let i in this.cities) {
					this.cities[i].forEach((value) => {
						if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1){
							result.push(value)
						}
					})
				} 
				this.list = result
			}, 100)
		}
	},
	methods : {
		handleCityClick (city) {
			this.$store.commit('changeCity' , city)
			this.$router.push('/')
		}
	},
	mounted () {
		this.scroll = new Bscoll(this.$refs.search)
	}
}	
</script>

<style lang="stylus" scoped>
	@import '~styles/varibles.styl'
	.search
	  height: .72rem
	  padding: 0 .1rem
	  background: $bgColor
	  .search-input
	    box-sizing:border-box
	    width: 100%
	    height: .62rem
	    line-height: .62rem
	    padding: 0  .1rem
	    text-align: center
	    border-radius: .06rem
	    color: #666
	.search-content
	  z-index: 1
	  overflow: hidden
	  position: absolute
	  top: 1.58rem
	  left: 0
	  right: 0
	  bottom: 0
	  background: #eee
	  .search-item
	    line-height: .62rem
	    padding-left: .2rem
	    background: #fff
	    color: #666
</style>